Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 24c35f7151d3a2621db3cab592e95e3364837c720ea4cdd9a63e46ac53006d31:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^